(lachrymatory, sternutatory, and, above all, vesicatory, of which yperite is the most dangerous); second, asphyxiants of which the most deadly is phosgene; third, those affecting the nervous system.    From Wordnik.com.  [Ferdinand Édouard Buisson - Nobel Lecture] Reference

We saw the minister visiting a factory and pinning the Legion of Honour on to the breast of a worker blinded by yperite.    From Wordnik.com.  [The riddle of the Rhine, chemical strategy in peace and war ...] Reference

Without disparaging our own efforts, we must pay a tribute to the achievement of the French yperite producing and filling factories.    From Wordnik.com.  [The riddle of the Rhine, chemical strategy in peace and war ...] Reference